Solve for w:
2(w-2)=w (w cannot be equal to -5)
original width -- x
original length -- x+5
area = x(x+5)
new width = x-2
new length = 2x+10
new area = (2x+10)(x-2)
(2x+10)(x-2) - x(x+5) = 136
2x^2 + 6x - 20 - x^2 - 5x - 136 = 0
x^2 + x - 156 = 0
(x-12)(x+13) = 0
x = 12 or x = -13
ignoring the negative,
width = 12
length = 17
original area = 12(17) = 204
new width = 10
new length = 34
new area = 10(34) = 340
increase in area = 340-204 = 136 , YEahh!
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